Fair warning: This is where I get all MG on you guys. As someone who just spent forty weeks traveling around the world, there is no category of consumer Web sites that makes me angrier than online travel sites. More than any other category on the Web, the early incumbents-- online travel agents like Expedia and Travelocity-- rafted on an early tidal wave of massive convenience and cost savings only to get lazy and never innovate again. They equated more inventory with innovation and treated every category of travel like the perishable commodity of booking a flight or a rental car. So when I have a good experience it delights me that much more.